incidentally

conjunctive

Japanese Meaning

付随的に・副次的に、主要でない事項として / 偶然に、予想外に / ちなみに、ところで（付記的な表現として）

I was researching the old photographs, and incidentally discovered a letter hidden behind one of them.

古い写真を調べていたら、たまたまそのうちの一枚の裏に隠された手紙を見つけました。

Sense（1）

(manner) In an incidental manner; not of central or critical importance.

The book discussed the subject, but only incidentally.

Sense（2）

By chance; in an unplanned way.

Sense（3）

(speech act, conjunctive) Parenthetically, by the way.

Incidentally, did you hear anything new from your brother yesterday?

more incidentally

（ comparative ）

most incidentally

（ superlative ）